Hi Gaby! I'm actually working on one now
I bought a few charm packs *batiks since i'm keepin this one!* and I cut them in half both ways to make 2.5 in squares. I also bought 1,000 1in. hexies on ebay. The squares fit the hexies with the perfect amount of extra for basting. I've done the freezer paper method to and love it. I just dislike cutting the hexies out! Honestly, you may want to try a sample flower using both methods to see what you like best. There's nothing worse than getting everything ready and finding out you don't like the method you already paid for!!
Best of luck I hope you post your progress!
Happy Quilting.